Răspuns :
40 39 38 38 2 1 0 38 38 38
(2 +2 +2 ) : 7 = 2 ( 2 + 2 + 2 ):7= 2 x (4+2+1) :7= 2 x7 :7 = 2
(2 +2 +2 ) : 7 = 2 ( 2 + 2 + 2 ):7= 2 x (4+2+1) :7= 2 x7 :7 = 2
C=(2^40+2^39+2^38):7
C=2^38(2^2+2+1):7
C=2^38x7:7
C=2^38
^- la puterea
C=2^38(2^2+2+1):7
C=2^38x7:7
C=2^38
^- la puterea